1. Was your hypothesis correct? Why or why not? 2. Use the experiment to explain what density is. How is it different from weight and mass?

3. Why do some objects with a greater mass float and some objects with less mass sink?

4. As a scientist, you have been tasked with building a boat. Your first prototype sinks. What can you do to make it float?

5. What did you learn from this lab?

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current